Improvement in ventilators



.0.M.HAND0VBR;

Ventilator.

Patented May?, 187s.

ATTORNEY N.FE\'ERS. PHOTU-UYHOGRAPHR. WASNINGON. D. C.

' UNITED STATES PATENT OFFICE;

CHARLES M. HANDOVER, OF BROOKLYN, NEW YORK.

IM PROVEME-NT4 IN VENTI LATO RS.

Specification forming part of Letters Patent No. 203,447, dated May '7, 1878; application filed 11) il' A 12,

To all whom it may concern:

Be it known that I, CnAnLEs M. HANDovnR, of Brooklyn, in the county of Kings and State of New York, have invented a new and valuable Improvement lin Ventilators; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and gures of reference marked thereon.

Figure 1 of the drawings is a representation of a horizontal section of my improved ventilator. Fig. 2 is a like view of a modiiication thereof, and Fig. 3 is a side view of an elbowed section of the air-tube.

This invention has relation to improvements in ventilators for dwellings, public buildings, and oflices.

The nature of the invention consists in combining with a tubular conduit, closed at each end by a wire or other screen, and a horizontally-vibrating-valve arranged at one end of the same, and provided with a'weighted arm, a bearing made of cloth or other soft material, against which the cloth-covered free edge of the valve abuts when it is vibrated by a strong wind, without noise, as will be hereinafter more fully set forth.

In the annexed drawings, the letter A designates `the air-tube, made in two or more sections, c c', ttin g the one into the other, as shown in Figs. 1 and 2, and extensible or contractible, so as to lengthen or shorten it in accordance with the thickness of the wall. This tube is, preferably, of rectangular form, and is set in the jamb of the window-frame, at a suitable height from the iioor, openings beingV made in the faces of the frame for its reception, the said openings being closed by a revticulated material, b. Where the faces of the jamb are of iron or stone, the section thas its, opening c inthe side, and this opening registers with an aperture, d, partly in the inner face of the outside plate e of the window-frame, and partly in thesash f, as shown in Fig. 2 5 or the Window-frame may be avoided entirely by the use of a double elbow-section, c. (Shown in Fig. 3.)

The section a (the innermost one) has near its inner end an oblique vertical currentbreaker, B, extending from its top to bottom, to the free edge of which is hinged a horizontally-vibratingvalve, C, having near its hin ged edge a projecting weighted arm, g. The

valve is nicely balanced on its bearing by the Weighted arm aforesaid, and extends from v the top to the bottom of the section c. It is of sufficient length to reach obliquely across the said section, and abut against the bearing D, upon the opposite sidethereofbwith its cushioned free edge h. The bearing is made of cloth or other soft material, as buckskin and the like. Its outer edge is rigidly secured to u the corresponding portion of the section c. It

kand at the other to the ends of a metallic spreader, l, which holds the bearing-cloth D distended.

At the opposite side of the section a', and at its rear end, is a current-breaker, J, reaching from top to bottom thereof, and nearly half-Wayacross. The valve isalways open, ex-

cept when the wind is blowing against it, to let out foul air. Under these circumstances the current is thrown by the breaker J against the valve, causing it to swing noiselessly against the bearing-cloth, when the outward iiow of air, as well as the inward current, is shut oft'.

The contact of the valve, its edge being cusl1' ioned with the bearing-cloth D, is inaudible. Upon coming in contact therewith, the springs s of the said cloth are distended bythe pressure of the valve, and when the wind lulls the said springs react, thereby straightening out the said cloth, and throwing the valve C open. The outward flow of air is thus re-established. The cold air from the outside will be excluded as often as it blows sufficiently hard to swing the valve.

The air-tube A may be made of any suitable material, metal being preferred.

What I claim as new, and desire t-o secure by Letters Patent, is-

In a house-ventilator, the combination, with Y the air-tube A, having the end screens b, and the horizontally vibra-ting valve C, having edge-cushion h and weighted arm g, of the yielding bearing D and current-breaker J substantially as specied.

In testimony that I claim the above I have hereunto subscribedmy name in the presence of two witnesses.

CHARLES MOREY HANDOVER.

Witnesses:

HENRY ACKER, WILLIAM Fosimrfr. 

